Would a zealot barbarian’s divine fury trigger during an opportunity attack?

The Path of the Zealot barbarian (Xanathar’s Guide to Everything, p. 11) gets the Divine Fury feature at level 3, which states:

At 3rd level, while you’re raging, the first creature you hit on each of your turns with a weapon attack takes extra damage equal to 1d6 + half your barbarian level. The extra damage is necrotic or radiant; you choose the type of damage when you gain this feature.

Does it work like the Rogue’s Sneak attack, in that it can trigger on opportunity attacks, since it’s a different turn? Or does the "on each of your turns" bit make it not work.

Do opportunity attacks have disadvantage if I use my action to Dodge and then move out of melee range?

I am currently playing a multi-class Cleric 5 / Rogue 2 and at times I have managed to kite melee mobs successfully using my Cunning Action to Disengage, then my movement and then using a ranged attack, which has worked fine for most of the time. Sometimes though I get pounced on by several melee mobs at once (3-5), especially when we face tactical mobs. In this case I have ended up in a loop where they catch up with me each time because I am having to use my Cunning Action to Disengage, instead of Dash.

Sometimes, I just want to get away quite far by using Dash instead, without getting pummeled by the opportunity attacks in the process. I want to get more distance between me and the mobs so they cannot catch up with me in their next move.

Basically, I want to be able to use Dodge as my Action so that when I move out of melee range from the 3-5 mobs there is less of a chance the mobs will hit me in the process, with 3-5 opportunity attacks. We’ve not tried this in our campaign yet, so I want some confirmation about how this works and whether the 3-5 melee mobs who are right next to me would get disadvantage on their opportunity attacks as I try to dash off?

I especially appreciate answers that contain play-tested experience from DMs who have managed this situation or players who have actually played as a Rogue.

How to describe that an enemy can avoid opportunity attacks?

I’m the DM of my group. When we are playing I try to describe the effects and actions of enemies and npcs without spelling out exactly what they are to keep some mystique to the actions. Like describing that “the mage shoots a large electrical beam” instead of calling it lighting bolt outright.

I want to add a Flyby effect to a soon to be boss enemy, the description of Flyby is

Flyby: The [creature] doesn’t provoke Opportunity Attacks when it flies out of an enemy’s reach.

However I don’t want to make it seem as if the enemy is avoiding opportunity attacks just because, but neither I want to spell the effect out so they still have to think about it.

How then can I describe an enemy that has immunity to Opportunity Attacks without saying it exactly like that?

Attacks of opportunity against ranged attacks – order of attacks

Character A is using a ranged weapon while he is within the threatend area of character B. For that reason, character B can make an attack of opportunity against character A.

Question regarding the order of the attacks: The attack of opportunity of character B comes before the ranged attack of character A, right? If the attack of opportunity by character B causes enough damage to kill character A, then character A cannot make the ranged attack anymore, can he?

Can I choose to provoke an opportunity attack with the Mobile feat?

If I take the mobile feat, can I choose to allow an opportunity attack on my character even if the feat would normally allow me to avoid it?

Mobile: …When you make a melee attack against a creature, you don’t provoke opportunity attacks from that creature for the rest of the turn, whether you hit or not.

Regarding the rational, mechanically my character sometimes tries to draw OAs that might otherwise hit others and it often reinforces the role play of the character’s personality.

Can you ready disengage to avoid opportunity attacks on your turn? [duplicate]

Can you ready the disengage action (say when the enemy gets within 5 feet of you), so that on your turn you can move away from that enemy without provoking opportunity attacks as you have already disengaged?

In other posts I have seen that readying disengage is legal, but I’ve not seen this particular question asked before.

Does Colossus Slayer work with an Attack of Opportunity?

I have my turn hit my opponent and get to use Colossus Slayer then on their turn they turn around and run away giving me an Attack of Opportunity, as that is on their turn does that mean I can use Colossus Slayer twice, once on my turn and once on their turn?

Colossus Slayer states damage is only once per turn. As Colossus Slayer does not explicitly state your turn I can see some room for confusion or debate over this